Don’t marry anyone so good looking that many other people flirt with them.
Go ugly early?
Marry someone who does not cheat; even if he’s gorgeous.
Never Make A Pretty Woman Your Wife (Jimmy Soul, 1963)
https://www.youtube.com/watch?v=6EqFVWzOfN8
Use your forearm as a strop to resharpen razor cartridges. Go opposite the normal blade direction ... you’re not trying to shave your arm. Make ten strokes.
My cartridges now last until I get tired of using them.